
6 min learnNew DelhiAug 6, 2026 03:00 PM IST
How a lot protein is an excessive amount of protein, and might rising protein consumption pace up ageing, shorten lifespan? A brand new research revealed within the journal Cell Press Blue notes that going straightforward on protein helps scale back ageing and mobile harm and enhance metabolic well being, particularly for individuals with a sedentary way of life. For the overview, researchers from the College of Wisconsin-Madison within the US studied over 350 scientific research and famous that a number of organic mechanisms defined why going straightforward on protein restriction helps general well being. “In younger rodents, dietary protein restriction improves metabolic operate by lowering adiposity, rising power expenditure, and bettering glucose homeostasis. This isn’t on account of decreased calorie consumption; protein restriction truly will increase meals consumption but decreases fats mass and weight on account of elevated power expenditure,” the overview famous.
DISCLAIMER: This text is predicated on data from the general public area and/or the specialists we spoke to. At all times seek the advice of your well being practitioner earlier than beginning any routine.
Though these results are most pronounced in males, females additionally present “improved metabolic well being with protein restriction”. “Protein restriction stays efficient when initiated late in life (18–20 months of age), rising power expenditure and bettering metabolic well being in aged mice. The metabolic enhancements induced by such restriction seemingly contribute to the longevity advantages, making improved metabolic well being our first hallmark,” it added.
To confirm, we reached out to specialists.
Dr Sundar Krishnan, senior guide, inside drugs, KIMS Hospitals Thane, clarified that whereas the research has attracted quite a lot of consideration, “it can’t be seen as proof that protein is dangerous”. “The principle level is that consuming an excessive amount of protein, particularly when this quantity constantly goes past the physique’s wants, doesn’t result in any further well being advantages and may have an effect on among the organic pathways related to ageing and metabolism. Nonetheless, the impact will fluctuate in keeping with an individual’s age, stage of physical activity, common food regimen, and any medical circumstances they’ve,” mentioned Dr Sundar.
Dr Manjusha Agarwal, guide, inside drugs, Gleneagles Hospital Mumbai, cautioned that folks “mustn’t cease consuming protein after studying headlines claiming it shortens life”. “Protein is an important nutrient that helps construct muscle mass, restore tissues, help immunity and keep general well being. The latest overview means that consuming extreme quantities of protein, particularly from processed meat and purple meat in an excessive amount of amount, shouldn’t be advisable for anybody,” mentioned Dr Agarwal.

Bodily inactive people normally want much less protein than athletes or individuals who participate in common energy coaching, famous Dr Sundar. “The truth that one consumes significantly extra protein than is important doesn’t imply that their well being will probably be improved. Extra energy, irrespective of the place they arrive from, can result in weight acquire and metabolic issues. Furthermore, some research point out {that a} constantly high protein intake may set off growth-related pathways that are useful for muscle restore; nonetheless, when these pathways stay constantly lively, they aren’t at all times useful for wholesome ageing,” asserted Dr Sundar.
Ought to individuals deliberately scale back their consumption of protein with the intention to stay longer?
No, asserted Dr Sundar, mentioning that protein is a essential nutrient that’s important for sustaining muscle mass, supporting the immune system, repairing tissues, and contributing to wholesome ageing. “The intention shouldn’t be to limit protein however to make sure an applicable consumption of it. It’s problematic whether or not one consumes too little or an excessive amount of. As an alternative of going together with present developments, people ought to soak up protein primarily based on their age, stage of exercise, and common well being.”
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Is it advisable for some teams to take particular care when consuming diets which can be very excessive in protein?
Individuals who have persistent kidney illness, explicit liver issues, or different metabolic circumstances mustn’t observe a high-protein food regimen until their prescribing physician tells them to. “In distinction, older adults typically want adequate somewhat than restricted protein to decrease their danger of dropping muscle and turning into frail. That is exactly why one-size-fits-all recommendation is inappropriate,” mentioned Dr Sundar.
Since so many individuals are taking protein shakes, consuming protein bars and consuming protein-enriched meals on daily basis, ought to this be a trigger for concern?
Specialists notice that folks can profit from taking protein dietary supplements if they really have issue getting sufficient from their food regimen or if their protein wants have elevated due to intense train or explicit medical circumstances. “But, such dietary supplements mustn’t take the place of a well-balanced food regimen, and having extra protein shouldn’t be at all times higher. It’s sufficient for many wholesome adults to satisfy their protein necessities by way of a various food regimen,” mentioned Dr Sundar.
What’s the most widespread false impression about protein and well being right this moment?
It’s generally thought that if a sure protein is helpful, then extra of it should be higher. Actually, good well being depends on a balanced diet, common bodily train, adequate sleep, and administration of lifestyle-related illnesses. “Whereas protein is only one aspect of a wholesome lifestyle, an overemphasis on a single nutrient tends to take one’s consideration away from the broader image,” mentioned Dr Sundar.
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Nonetheless, specialists urge that it doesn’t show that protein itself shortens lifespan. “The hot button is moderation and stability. Embrace the correct amount of protein primarily based in your age, well being and exercise stage, and select more healthy sources akin to pulses, beans, dairy, fish and nuts together with common train,” mentioned Dr Agarwal.
DISCLAIMER: This text is predicated on data from the general public area and/or the specialists we spoke to. At all times seek the advice of your well being practitioner earlier than beginning any routine.






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